‎"JENNINGS, H. S.‎
‎Studies on Reactions to Stimuli in Unicellar Organisms. IX. - On the Behavior of Fixed Infusoria (Stentor and Vorticella), with Special Reference to the Modifiability of Protozoan Reactions. - [PRESENTATION COPY]‎

‎[No place], 1902. Royal8vo. In the original printed wrapper. Uncut. Offprint from ""The American Journal of Physiology"", Vol. VIII, October 1, No. 1, 1902. With authors presentation inscription to top of front wrapper: ""With compliments of / H. S. Jennings"". A very fine and clean copy. Pp. 23-60.‎

Reference : 47646

‎Scarce offprint with author's presentation inscription of this important paper on the stimuli of unicellar organisms. Jennings observed with with Max Verworn that the ciliated protozoan, Paramecium - oriented and swam toward the cathode in an electric current when it was already swimming, but did not respond in this way, and seemed not to respond at all, if it was quietly in contact with a solid object when the current was turned on.""""Herbert Spencer Jennings was widely recognized and greatly respected not only as a pioneering biological investigator but also as a thinker, philosopher, and educator . He was a master of the art of setting forth simply, clearly, and vividly, in print and in public lectures, the current state of genetics and general biology and of recognizing and pointing out their implications for the general public and for specialists in various disciplines. ""Herbert Spencer Jennings (1868-1947), American botanist who was trained at Illinois Normal School and the University of Michigan, then spent a year studying protozoans with Max Verworn at the zoological station in Naples. In the early twentieth century, Jennings began studying inheritance and evolution in protozoans and introduced new experimental methods for laboratory study. By 1920 he had left the laboratory to popularize genetics and harmonize the relationship between biology, religion, and the humanities.‎